How to measure your ring size at home in five minutes

A ring that fits can be worn all day without spinning or leaving a mark. Getting the size right from the start saves a resize after delivery.

Method 1: measure a ring that already fits

1. Pick a ring that fits the finger you plan to wear the new one on.
2. Lay it on a ruler and measure the inner diameter, inside edge to inside edge.
3. Compare with the table below.

Method 2: measure with string or a paper strip

1. Wrap the string or paper strip around the base of your finger, snug but not tight.
2. Mark the point where the ends meet.
3. Measure the marked length; this is the circumference of your finger.
4. Compare with the circumference column below.

Conversion table

• US 5: diameter 15.7 mm, circumference about 49.3 mm
• US 6: diameter 16.5 mm, circumference about 51.8 mm
• US 7: diameter 17.3 mm, circumference about 54.3 mm
• US 8: diameter 18.1 mm, circumference about 56.9 mm
• US 9: diameter 18.9 mm, circumference about 59.4 mm

Tips for an accurate reading

• Measure at the end of the day, when fingers are at their largest.
• Avoid measuring with cold hands or right after exercise.
• If your knuckle is wider than the base of the finger, choose the size that just slips over the knuckle.
• Bands 4 mm or wider sit tighter; go up half a size.
• If you fall between two sizes, choose the larger one.

For complete certainty, book an appointment in store to measure with a standard ring gauge and try on the real piece.